The response was overwhelming yes. 75% of the respondents said, these URL shortening services should pass link value and the search engines should retain that value to the redirect. 25% said they should not pass value.

Here is the pie chart:

The "other" responses included, "dont care," one suggested that they offer a paid option that passes value, while the rest are nofollowed. One even suggested that Google make their own URL shortening service.